Functional Imaging in Hyperkinetic Disorders
| Autor: | Guy V. Sawle |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Dystonia
congenital hereditary and neonatal diseases and abnormalities medicine.medical_specialty Movement disorders Essential tremor Choreiform movement Chorea medicine.disease nervous system diseases Physical medicine and rehabilitation Rhythm Action (philosophy) mental disorders medicine medicine.symptom Psychology Neuroscience Pill-rolling tremor |
| Zdroj: | Brain Mapping: The Disorders |
| DOI: | 10.1016/b978-012481460-8/50015-9 |
| Popis: | This chapter reviews hyperkinetic movement disorders including tremor, dystonia, and chorea. Tremor is an involuntary movement that is approximately rhythmic and roughly sinusoidal. Some kinds of tremor are present only at rest such as the pill rolling tremor of Parkinson's disease, whereas others are most marked on posture such as essential tremor or during particular motor activities such as primary writing tremor. Dystonia is a syndrome dominated by sustained muscle contractions, frequently causing twisting and repetitive movements or abnormal posture. It may begin in childhood or adult life. It may be focal or generalized or can be present at rest or only on action or even only during execution of a particular task such as writing. Chorea is Greek for "dance" and patients with chorea have jerky, restless, purposeless movements that give a fidgety appearance. The movements typically flit from one body part to another. Patients may try to hide choreic movements by continuing the movement into an apparently purposeful action such as adjusting their clothing or hair. Chorea may be caused by a variety of hereditary disorders, of which the commonest is Huntington's disease. Chorea can also occur as a side effect of certain drugs. |
| Databáze: | OpenAIRE |
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